Military WWII DUI Crest Pin Army 21st Engineer Screwback pin - I am not sure of the age - I have quite a few more DUI pins to list and in my store so shop (G2025G) :::::::::::::::::::::  NOTE #1 - I always include 2 or more photos in my auction listings - If using a mobile app please click Read More and they will appear.    :::::::::::::::::::::::::::::::::::::  Note #2:  The following is for explaining my inventory tracking process which is part of auction title : (a2023a) is for my inventory tracking  - NOTE:  if you purchase more than 1 item please contact me immediately so that can modify the oil invoice before you pay.